* {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      font-family: Arial, Helvetica, sans-serif;
      background-color: #ffffff;
      color: #000000;
    }

    /* 提交成功区域 */
    .success-section {
      width: 100%;
      min-height: 380px;
      padding: 58px 20px 50px;
      display: flex;
      align-items: flex-start;
      justify-content: center;
      background-color: #ffffff;
    }

    .success-container {
      width: 100%;
      max-width: 900px;
      text-align: center;
    }

    /* 成功图标 */
    .success-icon {
      width: 44px;
      height: 44px;
      margin: 0 auto 30px;
      border-radius: 50%;
      background-color: #5bc3b8;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .success-icon svg {
      width: 26px;
      height: 26px;
      display: block;
    }

    /* 提示文字 */
    .success-title {
      margin-bottom: 44px;
      font-size: 32px;
      line-height: 1.3;
      font-weight: 400;
      color: #000000;
    }

    /* 帮助中心按钮 */
    .help-center-button {
      min-width: 195px;
      height: 52px;
      padding: 0 20px;
      border: 1px solid #888888;
      border-radius: 5px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background-color: #ffffff;
      color: #333333;
      font-size: 16px;
      font-weight: 400;
      text-decoration: none;
      transition:
        background-color 0.2s ease,
        color 0.2s ease,
        border-color 0.2s ease;
    }

    .help-center-button:hover {
      background-color: #5bc3b8;
      border-color: #5bc3b8;
      color: #ffffff;
    }

    .help-center-button:focus-visible {
      outline: 2px solid #5bc3b8;
      outline-offset: 3px;
    }

    /* 移动端适配 */
    @media screen and (max-width: 768px) {
      .success-section {
        min-height: 360px;
        padding: 50px 20px 45px;
      }

      .success-icon {
        width: 42px;
        height: 42px;
        margin-bottom: 26px;
      }

      .success-title {
        margin-bottom: 36px;
        font-size: 24px;
        line-height: 1.4;
      }

      .help-center-button {
        min-width: 180px;
        height: 50px;
        font-size: 15px;
      }
    }

    @media screen and (max-width: 480px) {
      .success-section {
        min-height: 340px;
        padding: 45px 16px 40px;
      }

      .success-title {
        margin-bottom: 32px;
        font-size: 21px;
      }

      .help-center-button {
        width: 100%;
        max-width: 220px;
      }
    }